GIVING BRAINLIST PLEASE HELP!!

In the figure at the right, if PQ is perpendicular to QR,
then a + b + c + d =?

A) 180°
B) 225°
C) 270°
D) 360°

GIVING BRAINLIST PLEASE HELP In the figure at the right if PQ is perpendicular to QR then a b c d A 180 B 225 C 270 D 360 class=